New inhibitors of tyrosyl-DNA phosphodiesterase I (Tdp 1) combining 7-hydroxycoumarin and monoterpenoid moieties

作者：Khomenko Tatyana; Zakharenko Alexandra; Odarchenko Tatyana; Arabshahi Homayon John; Sannikova Victoriya; Zakharova Olga; Korchagina Dina; Reynisson Johannes; Volcho Konstantin; Salakhutdinov Nariman; Lavrik Olga^*

来源：Bioorganic & Medicinal Chemistry, 2016, 24(21): 5573-5581.

DOI：10.1016/j.bmc.2016.09.016

• Tyrosyl-DNA Phosphodiesterase I inhibitor
• Coumarin
• Monoterpene
• Molecular modeling

A number of derivatives of 7-hydroxycoumarins containing aromatic or monoterpene substituents at hydroxy-group were synthesized based on a hit compound from a virtual screen. The ability of these compounds to inhibit tyrosyl-DNA phosphodiesterase I (Tdp 1), important target for anti-cancer therapy, was studied for the first time. It was found that the 7-hydroxycoumarin derivatives with monoterpene pinene moiety are effective inhibitors of Tdp 1 with the most active derivative (+)-25c with IC50 value of 0.675 mu M. This compound has low cytotoxicity (CC50 >100 mu M) when tested against human cancer cells which is crucial for presupposed application in combination with clinically established anticancer drugs. The ability of the new compounds to enhance the cytotoxicity of camptothecin, an established topoisomerase 1 poison, was demonstrated.

• 出版日期2016-11-1